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A.L.1                   PART III - HANDLING
Page 70
             Airbrake                                           Low IAS-negligible. High IAS
                                                                       and high mach no.-slight
                                                                       transient nose-down moderate
                                                                       nose-up when extended.
        (f)  Flying in turbulent conditions
             The recommended speeds for flight in turbulent conditions are as
             Climbing or level flight	    ..           Above 25,000ft.              0.83M
                                                                 Below 25,000 ft.             350 knots
             Descending (airbrake out,           Above 35,000 ft.             0.83M
               flap 20°)  ..         ..         ..          Below 35,000 ft.             280 knots
        (g)  Flying with electric follow-up tailplane
                 (i)   The electric follow-up tail gives an improvement in manoeuvring
                       capabilities above 0.9M. Handling characteristics are otherwise
                       normal, but it should be noted that the interconnection remains
                       fully operative with the elevator in Manual.
                 (ii)  The tailplane interconnection can be selected ON or OFF at
                       any speed provided that the aircraft is trimmed for hands off
                       flight whenever either selection is made. The aircraft should be
                       flown in the trimmed condition whenever possible.

        (h)  Flying with drop tanks on inboard and outboard pylons
                 (i)   At speeds below the permitted maximum the handling character-
                       istics are similar to those for clean aircraft and with fuel in the
                       drop tanks rolling manoeuvres must not exceed 360°. During
                       combat manoeuvres with fuel in the tanks it is recommended
                       that aileron movement is restricted to half of full movement to
                       avoid an excessive rate of roll.
                 (ii)  Pressure errors
                       The presence of drop tanks on the outboard pylons has a
                       material effect on pressure error at high speeds; resulting in
                       under-reading of the ASI and machmeter as compared with
                       clean aircraft.

                 (iii  Practice Manual flying
                       Practice selection of Manual should not be made when carrying
                       external stores other than empty inboard drop tanks since their
                       presence increases the difficulties of reselecting Power.

        (j)  Flying with RP's
                       Aileron movement becomes restricted at 0.97M when carrying
                       RP's. When drop tanks are carried on the inboard pylons it is
                       difficult to exceed .98M.
        (k)  Flying for endurance
              The recommended speed is 180 knots.

        71.   Flying at reduced airspeed
        (a)   Fly at 70-200 knots using 23° (2 notches down) flap.
        (b)   The hood may be opened fully below 200 knots, but at about 150
               knots excessive vibration sets in. This vibration is reduced if the


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